Rod-straightening machine



l. E. SCHMIDT AND C. E. McARTHUR.

ROD STRAIGHTENING MACHINE.

APPLlcAlon man nEc.5. .1921.

3 SHEETS-SHEET l.

1,418,026, Patented May 30,1922.

J. E. SCHMIDT AND C. E. McAITHUR.

ROD STHAIGHTENING MACHINE.

APPLICATION FILED DEC-5. 192|.

,. ./Ma al. Mmmmgw. @MM Mw C d w I 6 Y MN Wma A N w y f 2 I 4 L.I Anu. M P XEA mw I 6 1 .3 \//f 4M y IWI- mw @6.wk o, I 4. j am 8 W 1 4, w 1

J. E. SCHMIDT AND C. E. McARTHUR.

non sTRAmHemNe MACHINE.

APPLICATION FILED DEC.5. 192|.

1,418,026. man@ May 30,1922

- 3 SHEETS-SHEET 3.

fihi.

JOIINYE. SCHIIIXDT .AND CLYDE E. MCARATHUR, OF CHICAGO, ILLINOIS.`

ROD-STRAIGHTENING MACHINE.

Application filed December 5, 1921.

for straightening rods of various sizes, andy it consists in certain peculiarities of the construction, novel arrangement and combination of the various parts thereof as will be hereinafter more fully set forth and specifically claimed.

The principal object of our invention, is, to furnish a rod straightening machine of simple and inexpensive construction, of great durability and strength, positive and highly efficient in operation, as welles, one whichshall be extremely easy to operate and in which the operation thereof and the feeding of rods thereto may be performed by one person only.

Another object is7 the provision of'a machine of the character above referred to, which shall be of such construction and arrangement of its parts, that the operation of straightening rods thereby will be performed by the impact thereon of a movable die or member co-operating with a complemental fixed die or member, as the rods are fed between said dies.

Other objects and advantages of the invention will appear from followingdescription and explanation. l

In the accompanying drawings, which serve to illustrate an embodiment of the invention- Fig. 1 is a view in side elevation partly in section of a machine embodying our improvements, showing the movable or impact die thereof, as well as the piston of the cylinder, in its raised position.

Fig. 2 is a central vertical sectional view taken on line 2-2 of Fig. 1 looking in the direction indicated by the arrows.

Fig. 3 is a. bottom taken on line 3 3 of Fig. 2.

Fig. 4 is a plan view taken on Fig. 2.

Fig. 5 is a detached perspective view of one of the rod straightening dies, and

Fig. 6 is a fragmental sectional view of one of said dies showing the manner of detachably securing an insert thereto.

line 4 4 of Specification or" Letters Patent.

plan sectional view y Patented May 30, 1922.

Serial No. 519,935.

Like numerals of reference refer to corresponding parts throughout the different views of the drawings.

Referring now more particularly to Figs. 1- and 2` of the drawings, the reference numeral 10` designates the base of the machine, which' may beef any vsuitable size, form and material, but by preference rectangular in shapeand provided on its lower surface with a series of spaced depending ribs 11 for the. purpose of reinforcing said base. Mounted on the upper surface of the base and secured thereto by'means of screw bolts 12,*is an upright guide member which is designated as a whole by the reference nu-' meral 13, and comprises a horizontally disposed base 14v at its lower end fromA which is upwardly extended a pair of spaced parallel guides 15 for co-operation with a portion of the movable or impact die of the machine. 1

The base 14 of the guide member 13 also has upwardly yextended therefrom a number of vertically 'disposed'uprights 16 which terminate at their upper ends on a horizontal line about flush with the upper surface of the stationary die. The upper ends of the guides 15 are united by a transverse portion 17 vfrom which is upwardly extended a rib 18 on the upper' end of which is located or formed `a horizontal top 19 as will be readily understood by reference to Figsl and 2 of 'the drawings. The outer faces of the uprights 1G and guides 15 are provided with transversely disposed circular recesses 2OV which as shown are horizontally aligned and are for the purposes tobe presently ex- A plained. y

Mounted on the upper surface of the base 10 near the opposite side thereof from the guide 13 is another guide member, which is designated as a whole by the numeral 21 and is T-shaped in cross-section as shown. rl`he guide member 21 has a floor 22 at its lower end to rest on the base 10 to which it is secured by means of screw bolts 23 or otherwise. The upper end of the guide member 21 is provided with a horizontally disposed top 24 which lies flush with the top or portion 19 of the guidemember 13 and together with said portion 19 supports the base plate or lower head plate 25 of a vertical cylinder 26 which may be secured at its lower end to said plate by means of screw bolts 27 extended through suitable openings in an annular fiange 28 on the cyl-.

inder 26 and into suitable openings in the plate 25, which latter plate is secured in any suitable mannerto the portions l2)v and 24 of the guide members 13 and 21.4respectively. Mounted on the upper end of the cylinder 26 and secured to an annular flange 29 by meansy of screw bolts 30, is thebase 8l of the valve casing 82 which-has communication through a pipe 33 with a supply of compressed air or other motive fluid not shown. This valve casing has 'leading therefrom through its base an inlet port 34 which lcomnninicateswith a port 35 with which the cylinder 26 is provided in its wall. As shown, the port 35 ext-ends toa point near the bottom of the cylinder and communicates at said point with the cavity' thereof. The valve' casing 82 is also provided with an outlet port 36 which communicates at oneef its ends with an outlet port 37 vwith which the cylinder 26-is provided in the'upper portion of its wall.v

Between the adj acent-ends of the ,ports 34 and .36, the base 31 of thevalve casing is provided with an exhausty port1-38 which leads from the cavity of said casingto the atmosphere. Slidably mounted -in the cavity of the casing 32-is a valve 39 which has inV its lower surface a port or recess 40 of sulicient length to encompass the exhaust port 38 and the outlet port 3.6, 'or the/inletv` port 34 and the exhaust port 38, alternately. VrlheV upper surface ofthe valve 3,9 is providedl with a concave recess 4l-fer the reception ofthe rounded end.- of an arm 42 extended froma ysleeve 43 whichy is lixed on a rocker bar`44 horizontally journaled in the valve casing, 32` and extended outwardly-thereof at one of itsends. Mounted on therout-` wardly-extendedportion of the rocker 'bar 44 ,is a hand lever 45 by meansqof which said bar can be turnedvin theproper 'direction to cause the valve 39 to co-operate with ythe ports of thevvalve )casing so as to admit motive fluid to the cylinder or to bev exhausted therefrom. At` opposite sides the valve casing 82 is provided with a stop rod 46l which rods are extended into fthe valve casing `at either end ofl the valve 3!) andv may be employed for, restricting its vmovements.

Slidably mounted inthe cylinder 26 is a piston 47 which has downwardly extended therefrom a piston rod 48 which passes through. a suitable opening' in the base plate 25, whichplate is equipped on its lower surfacey with: a stuffing box 49 which surrounds ther rod 43 and may be `of the usual or .ord-i1-` nary construction. It will be notechy by-reference to Fig. l, that the lowerend-of the inlet channel or port'35 communicates with the "'cav-ityf'of the, cylinder at`a 'slight 'distance above: the lbottom thereof, `and ,that'the below the top thereof. By this arrangement air cushions will be provided at the ends of the cylinder se asvto prevent the piston 47 striking them and thereby causing injury to the same.

Mounted transversely on the base l0 between the adjacent surfaces of the vguides 13 andv2l, is a die or-rod-straightening meinber, which is designated as a whole by the numeral 50, see Figs. 2, 4and 5 ofthe drawings. able die of themachine, which is designated as a whole by the numeral 5l, are, on their adjacent surfaces, complementary to each other and ontheir adjacent surfaces, their constructions are counterparts of one another. ln Fig. 5 is shown a perspective View of the die 50, from which view it will be understood 'that the same is inthe form of an elongated block of rectangular shape in outlines, and that it is provided at each of its sides with a plurality of spaced upwardly extendedv parallel arms 52, the arms on one side of the die being arranged in con incidence with the spaces between the armsr 52 on the other side of the die. These arms Ahave their uppervinner surfaces inwardly and downwardly beveled as at 53, which beveled portions intermediate their `rends have angular recesses 54, which recesses extend longitudinallyv throughout the length ofthe die and are for the reception of anV tongues are secured in place bymeans ofscrew-bolts 59 extended through the openings in said tongues and engaging openings in the ends ofthe said die. secured to the base 10 on which it rests by means of screw-bolts 60 kextended upwardly through the base and engaging suitable openings inthe bottom of the die as will be The die50 is .This die 50 and the` impact ormovobserved by reference to Figs. l and 2. "The guides 13 and 2l are spaced from the sides of the die 50 and perform no functionrwith respect thereto except to guide ythe movable die 5l so that it will cooperate accurately with the stationary die. As before stated,

the impact or movable die 5l is, on its sur-` face adjacent the die 50, a ycounterpart in construction, and the above description` with" reference to the die 50, is believed to vaccurately describe the lower surface ofthe die 5l, except that it will be'understoodthat the arms 52 of the die 5l are extended downwardly and that the beveledfaces. 53 of said-- arms as well as the angular recess 56 of the insert 55, are extended upwardly instead of downwardly. The die lhas at one of its side walls an outward extension 61 which is provided in its outer surface with a recess (32 to co-act with the adjacent portion of the guide member 21 so as to permit vof vertical movement of the movable die. The opposite side wall of this die is .provided with an outward extension` 63 which has about midway between its ends a lateral projection 64; which tits snuglybetween the vadjacent surfaces of the guide members 15 of the guide 13. This lateral projection G11 may have mounted on the lowerportion of one of its sides abutting member or die G5 to co-act with a cutting member. 66, see Figs. 2 to 4t, mounted on the. surface of one yof themembers 15 adjacent the projection 64- for the purpose of cutting oifl rods which may be placed in the recesses 2O in the lower portion of the outer faces of the members of the guide 13,

of the drawings. VThe impact ;or movable die 5l is provided on itsnpper surface with a vertically apertured boss 67, in. whichv aperture the lower end ofther piston rod may bel secured in any suitable manner.v The outer face of the guid'eQlis 4provided on the lower portion thereof with a pair of laterally extended spaced projections 68 which provide a recess 69 into which recessa portion of a rod which has been bent into loop form can be placeo, while the other ymember of the loop will extend above or below one of the projections 68, when' by moving the rod upwardly or downwardly, it is evident the loop can be straightened to such an extont that the rod can be placed in the square or rectangular opening provided by the complementary dies ofthe machine,

The construction and arrangement of the members of these dies are such that the arms 52 of one of them will fit and operate in the spaces between the arms of the other die, so

that in the reciprocation of the piston in the cylinder, the movable die willbe caused to telescope with the fixed die, in which operation it will be understood that the square opening between said dies will be maintained in such form but will be diminished in size according to the distance downwardly that the movable die may be forced.

By placing an imperfect or bent rod longitudinally in the opening between the dies and permitting' it to rest on the adjacent inclined faces of the stationary die and in the recess 56 of the lower insert, it is manifest that .by turning the hand lever45 in the proper direction to permit compressed air or steam to pass from the valve chamber 32 through the ports 3G and 37 into the upper end of the cylinder, the piston 47 and the movable die 51 whichl it carries,

aswill be readily understood by reference to Figs. 1, and 2,.

will be moved downwardly with great. force against the rod, positioned as above stated, which operation will remove all ofthe kinks and bends of that portion of the rod exposed to the action of the dies.

-As the die members will be subjected, mainly, to the wear and st ess incident to the operation of the machine, at the apexes of their angular sockets, we employ the inserts which are by preference made of manganese steel, but may be of any other suitable material, which inserts are detachably mounted on the dies so as Jto-permit them to be removed and replaced if necessary. k n j Having thus fully described our invention, what we claim' as new and desire to secure by yLetters Patent, is-

1. ln a machine of the class described, the combinationwith a iixed die member, of a die member movable with respect thereto, said die members having on their adjacent portions transversely disposed spaced arms, the arms at each side of each die member being alternately disposed and opposed and having their adjacent faces inclined in oppositev directions at angles to one another, and means to reciprocate the movable member.

2. In a machine of the class described, the combination' with a fixed die member, of a die member movable with respect thereto, said members being constructed to form eomplemental opposed angular sockets to embrace a rod and to telescope one with the other, an insert seated in each member at the apexof its socket and having an angular recess with its walls co-inciding with the walls of the socket, and means to reciprocate the movable member.

3. In a machine of the class described, the

combination with a fixed die member, of a -mounted thereon at one end of said way,

a die member movably mounted and guided by said way, said die members having on the adjacent portions transversely disposed spaced arms, the arms at each side of each die member being alternately disposed and opposed and having'. their adjacent faces inclined in opposite directions at angles to one another, the arms of one of said members adapted to intermesh or telescope with the arms of the other member, the arms 13o of said members being` provided with complementa-l' ylongitudinally extended opposed angular sockets to embrace a rod, and means connected tothe movable die member for .reciprocatingvthe same.

5. ln a Amachine of the class described, the combination with a mainframe provided with a guide-Way, of a 'die member xedly mounted thereon at one end of` said Way, I a die member movablsy mounted in and guided -by said Way, said diemembers having on their adjacent portions transversely disposed spaced arms, the arms of one of said members adapted to intermesh or telescope With the arms o'l the other member,l the arms of said members being provided with complemental longitudinally extended opposed angular sockets to embrace a rod, an insert seated in each memberat the apex ct its socket andhaving' an angular' recess with its Walls co-inciding with vthe Walls of the socket, and means to Vreciprocate the movable member. j f 'j 6. In a ymachine of the class described,

the combination With a main frame provided With a guide-Way, of a die member iXedly mounted thereon at one end of said Way, a die member movably mounted in and guided e by said Way, said die members having` on their adjacent portions transversely disposed spaced arms, the arms at each side of each die' member being alternately disposed and opposed and having their adjacent 'faces inclined in opposite directions at angles to one another whereby complemental longitudinally extended opposed angular sockets to embrace la rod are lprovided and whereby the arms of one of the diemembers is adapted` to intermesh or telescope with thearms of the other member, and means to reciprocate the=1novable die member.v

7. In a machine of the lclass described, the combination with a main frame provided with a vertical guide-Way, of a die member lixedlymounted on the iframe at the lower end of said Way, a die member movably mountedin and guided by said way, said die members having on their adjacent surfaces at each of their sides transversely disposed spaced arms, the arms at'each side of each die being Ialternately disposed and having their adjacent faces inclined in opposite vdirections at angles to one another whereby complemental longitudinally eX- tended opposed angular socketsto embrace a rod are provided and Whereby'the arms of, one of the die members is adapted to ini termesh or telescope With .the arms of the other member, a cylinder vertically mounted on the' main frame above the guide-Way thereof, a piston lslidablefin said cylinder. and having connection'ivith the said movable die member, andfmeansto reciprocate the piston.

1 JOHN E; SCHMIDT.

CLYDE MGARTHUR; n 

